ok, some unproductive time at work produced some analysis of one of Rob's strava segments.
25.5 mile run at 5:40 pace outside of Alamosa CO. https://www.strava.com/activities/617303559
2:25 running time, 2:46 elapsed time. (21min difference)
Big net downhill with a grade adjusted pace of 5:48, (adds 3:25 to the run)
That is more than negated by the fact that the run averages about 8000ft altitude.
I compared it with tracker data. It matches perfectly. https://docs.google.com/spreadsheets/d/1glL6yLT2khAJtCH2NOMovT3wIuVHXmirrj0OOhtExCA/edit#gid=0
Confirms that Rob was with (or inside) the RV throughout the run, and he took one 15min break at 13.7 miles.
The other 6 minutes between running and elapsed were at the end of the run.